I am receiving the same problem, though it is limited to one of the emails I am attached to. I can receive the email if it is sent to our officers email, but if sent to the vppr email it will not come to me.
Diagnostic Code: 553 5.7.1 [TSS07] Connections will not be accepted from 50.19.253.65, because the ip is in Spamhaus's list; see
postmaster.yahooinc.com/error-codes
Delivery Status: 5.1.3 userunknown
Date Last Attempted: Thu, 31 Mar 2022 15:00:48 GMT 
